How severe is CVE-2025-15479?

CVE-2025-15479 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-15479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15479?

CVE-2025-15479 affects Ngsurvey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-15479 have an EU (EUVD) identifier?

Yes. CVE-2025-15479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1222.

When was CVE-2025-15479 published?

CVE-2025-15479 was published on 2026-01-07 and last updated on 2026-06-17.

CVE-2025-15479

CVE-2025-15479 is a medium-severity vulnerability in Ngsurvey with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1222
Weakness: CWE-79
Affected product: Ngsurvey
Published: 2026-01-07
Last modified: 2026-06-17

Description

Stored cross-site scripting (XSS, CWE-79) in the survey content and administration functionality in Data Illusion Zumbrunn NGSurvey Enterprise Edition 3.6.4 on all supported platforms ( on Windows and Linux servers ) allows authenticated remote users with survey creation or edit privileges to execute arbitrary JavaScript in other users’ browsers, steal session information and perform unauthorized actions on their behalf via crafted survey content that is rendered without proper output encoding.

Frequently asked questions

What is CVE-2025-15479?: Stored cross-site scripting (XSS, CWE-79) in the survey content and administration functionality in Data Illusion Zumbrunn NGSurvey Enterprise Edition 3.6.4 on all supported platforms ( on Windows and Linux servers ) allows authenticated remote users with survey creation or edit privileges to execute arbitrary JavaScript in other users’ browsers, steal session information and perform unauthorized actions on their behalf via crafted survey content that is rendered without proper output encoding.
How severe is CVE-2025-15479?: CVE-2025-15479 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-15479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15479?: CVE-2025-15479 affects Ngsurvey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-15479 have an EU (EUVD) identifier?: Yes. CVE-2025-15479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1222.
When was CVE-2025-15479 published?: CVE-2025-15479 was published on 2026-01-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ngsurvey:ngsurvey:*:*:*:*:enterprise:*:*:*

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